Overview
The analog output isolated safety barrier with surge protection function can realize the isolated transmission of 4~20mA signals from the instruments in the safe area to the dangerous area, drive the valve positioner, electric/pneumatic converter and other equipment on site, and support the bidirectional transmission of HART digital signals with wirebreak alarm function. This product needs independent power supply, and the power supply, input and output are isolated.
Specifications
| Input insafe area | |
| Input signal | 4~20mA (HART digital signal) |
| Output in dangerous area | |
| Output signal | 4~20 mA(HART digital signal) |
| Load resistance | When outputting 20mA, 0~500 Ω (customizable) |
| Nominal discharge current ln(8/20μs) | 5kA |
| Voltage protection level Up(8/20μs): | 60V(line to line) |
| Voltage protection level Up(8/20μs): | 600V(line to ground) |
| According to standards | GB/T18802.21-2016(equivalent to 1EC61643-21:2012) |
| Basic parameters | |
| Supply voltage | 20~35VDC |
| Power consumption | ≤50mA(24V power supply, 20mA output) |
| LED indicator | Green: power indicator |
| Output accuracy | 0.1%FS (Typical value: 0.05%F.S) |
| Response time | 2ms to reach 90% of the final value |
| Temperature drift | 0.005% F.S/℃ |
| Temperature parameters | Working temperature: -20℃ ~ +60℃, Storage temperature: -40℃ ~ +80℃ |
| Relative humidity | 10%~95% RH no condensation |
| Insulation strength | Between intrinsically safe side and non-intrinsically safe side (≥3000VAC/min); between power supply and non-intrinsically safe side (≥1500VAC/min) |
| Insulation resistance | ≥100MΩ (between input/output/power supply) |
| Electromagnetic compatibility | According to IEC 61326-1 (GB/T 18268), IEC 61326-3-1 |
| MTBF | 100000h |
| Wire requirements | Horizontal cutting surface ≥ 0.5mm2; Insulation strength ≥ 500V |
| Applicable field equipments | Valve locator, electric/pneumatic converter |
| Installation place | Installed in a safe zone, it can be connected to intrinsic safety instruments in hazardous areas up to Zone 0, IIC, Zone 20, and IIIC |
| Intrinsically safe certification | |
| Explosion proof mark | [Ex ia Ga]lIC [Ex ia Da]lllC |
| Explosion-proof standard | GB/T3836.1-2021 GB/T3836.4-2021 |
| Terminals 3-4 | Um:250V AC/DC Uo=28V DC lo=93mA Po=0.65W Co=0.083μF Lo=4.2mH |
| Certification body | CQST(China National Quality Supervision and Test Centre for Explosion Protected Electrical Products) Shanghai lightning protection products testing center |
Dimension
Schematic Drawings
Note:
1. The power supply of the power rail is an optional function. Users need to specify the power supply mode when ordering. Please refer to attachment on page 89.